Paper lift



A. W. ROBERTSON,

PAPER LIFT.

APPLICATION FILED APR. 22. 1921.

Patented Apr. 4, 1922.

3 SHEETS-SHEET I.

A. W. ROBERTSON.

PAPER LIFT.

APPLICATION FILED APR. 22, 1921.

Patented Apr- 4, 1922.

3 SHEETS-SHEET 2- 1III" lulllllll m avwemto'c v 41 140 Mfierlaon H @Mozw A A. W. ROBERTSON.

PAPER LIFT.

APPLICATION FILED APILZZv 1921.

1 A1 1,520. v Patented Apr. 4, 1922.

3 SHEETS-SHEET 3.

gvwentoz UNITED STATES PATENT OFFICE.

ARNO W. ROBERTSON, OF MOUNT VERNON, NEW YORK, ASSIGNOR TO GEORGE R. SWART 8t COMPANY, INC., OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

PAPER LIFT.

- Specification of Letters Patent.

Patented Apr; 4, 1922.

Application filed April 22, 1921. Serial No. 463,659. I

following is a specification, reference being made to the accompanying drawings, forming a part thereof.

My invention relates generally to machines for feeding separate sheets to a rint ing press or other like machine, and have devised my improved mechanism in connection with an automatic sheet-feeder in which the individual sheets are automatically separated from a feathered or fanned out bank resting on the feed-board and are then ad vanced to a suitable conveyor mechanism which will carry such sheets, one by one,

to the printing-press or other machine.

The objects of my invention are, among other things, to embody in a sheet-feeder of this type, an improved paper-lift upon which the vertical pile of superimposed sheets may be supported after being transferred from the loading truck to a movable table which is a part of the lift itself, and to provide suitable actuating means whereby such paper-lift with the vertical paper pile thereon may be elevated to form a rearward extension of the feed-board while at the same time by the elevation of the component parts of the lift, such vertical pile may be tilted forwardly in such manner as to feather or fan out such pile to the required extent to form a fanned out bank on the rear end of the feed-board beneath the sheet-feeding devices, and also overlapping on the rearward extension thereof when the paper-lift has.

' been fully elevated.

A further object of my invention is to simplify the construction of such paper-lifts with the devices for operating same so that on by the automatic sheet-feeding devices for which my improved device has been particularly designed.

Further advantages and unctions will hereinafter be more particularly set forth, and a preferred embodiment of'my invent1on is illustrated in the accompanying drawings in which Fig. 1 is a side elevation of my improved paper-lift attached to the rear end of the feed-board of an automatic sheet-feeder with which the printing-press is broken away;

Fig. 2 is an enlarged diagrammatic view showing the action of the device to fan,the

sheets of paper from-the pile ready to be finally separated and advanced to the press by the sheet-feeding mechanism Fig. 3 is'an enlarged fragmentary sec tional side view showing the manner of loadmg the table of a sheet-feeder with a pile of paper sheets;

Fig. 4 is a detail sectional plan view showing the table and its supporting members in the feeder,the section being taken onthe line- 4-4 in Fig. 3 looking in the direction of the arrow; and

Fig.5 is a plan view of my device, the

printing cylinder and sheet-feeding mechanism being omitted, together with a diagrammatic illustration of the electrical connections for the actuating motor. 7

Similar numerals refer to similar parts throughout the several figures.

Referring to the drawings, Gdesignates the cylinder of a printing press or other ma chine and 7 is the usual feed-board mounted on the side frames 8, the feed-board 7 serving to support the forward part of the fanned out bank of sheets which are acted on by the sheet-feeding and conveyor mechanisms to carry the separate sheets over the board 7 to the cylinder 6. Slida'bly mounted above the feed-board 7 is the main head 9 carrying the sheet-feeding devices proper which extend rearwardly as shown in Figs. 1 and 2. These feeding devices comprise the combing rolls 10 (only one being-shown) carried by the arm 11 loosely mounted on the shaft 12 carried by the head 9, such combin'g rolls being rotated by the train of gears I ordinarily equipped, the frame of the press being 13 actuated by the reciprocating rack 14 as shown in Figs. 1 and 2. Extending forwardly from the head 9 are two bars 15 (only one being shown in Fig. 1). upon which the sheet-conveyor mechanism is supported by which the individual sheets after being sep- 'vanced. over the the shaft 16 by tively 3 5 arated themselves constitute any part of my 1111- provement.

,At the rear end of the feed-board I ro- 'tatably mount the transverse-shaft 16 in the brackets 17 and 18 secured to the rear edgeof the feed-board 7 and the side frames 8.

i The shaft 16 carries a series of rol1ers-19 over which pass the conveyor tapes 20 upon which the forward portion of the pile is ad-.

feed-board 7. Mounted on brackets 21 .is the depending swinging table-board 22, the. board 22 being adapted to' swingupwardly and downwardly on the shaft 16 as its axis. The lower or rearward end of the table-board 22 has secured thereto two brackets 23 and 24 as shown in Fig. 4 in which the transverse shaft 25 is rotatably secured. The shaft 16 carries tape-rollers26, while the shaft 25 has affixed thereto rollers 27 around which the usual conveyor tapes 28 pass to advance the bank of sheets when the table-board22 is swung upwardly to its raised forwardly inclined position as shown in Fig. 2.

Pivoted to the outer ends of the are twot-able-carrier bars 29 and 30 secured to this shaft by forked ends 31 and 32 respecwithin the forked ends 31 :and 32 are two pulleys 33- and 34 respectively each journalled on theshaft 25 as shown in Fig. 4. The outer forked ends 35 and 36 of the car- I rier bars 29 and 30 carry pulleys 37 and 38 respectively as shown in Figs. 4 and 5.. Preferabl' the two carrierbars 29 and 30 each has ormed therein twoparallel slots 39 and 40, each set being located in transverse alinement to contain the depending flanges 41 and 42 of the two transverse anglerons jointly whereby ,43 'and 44 secured to the bottom of the table,

45 upon which the pile of paper 46.is loaded. When the flanges 41 and 42 are set down in the slots 39 and as shown in Fig. 1 the table. -with the pile of paper 46 is securely mountedupon the carrier bars 29 and 30 as a pile-support, and is. directly movable-on and with such bars when raised and lowered in con'unction with the table-board 22.

cans are provided to swing .the depending tablerboard 22 and the table 45 afiixedto the carrier. bars 29 and 30 as a pile-support the vertical pile 46 is tilted forwardly toproduce the required fanned out bank extendingforwardly on the feed board 7 beneath the combing rolls 1O In the embodiment shown two side-bars 47 and 48 are adjustably secured to the side frames 8.

the set-screws 49'or other suitable means; 2: hese bars project rearwardly from the side flames substantially in the plane of the saft 25 shown), ;whi e similar supports 83 de is secured the cross brace52; extending up- A wardly from brackets on the brace 52 are two supporting rods 53 and 54 respectively which are attached by any suitable means (not shown) to cross-beams or ceiling fix-- tures in the press room in which my improvement is installed, so as to secure the ends of such bars 47- and 48 in the'necessary eleva- 'tion which may be adjusted when desired. Pivoted to the endsof the brace 52 at either side of the machine are two collars 55 and 56 (Fig. 5) towhich flexible carrier cables or ropes 57 and 58 are respectively secured which carrier cables are similer in construetion and operation. Slidably secured on the side bars 47 and 48 are brackets 59 and 60 in which the winding shaft 61 is journalled as shown in Fig. 5, the shaft 61-having afiixed thereto two winding drums 62 and 63 of like size at either side of the machine. The carrier cable 57 passes downwardly around the.

pulleys 37'and 33 and then upwardly to the drum 62 to which-it is secured, while the cable 58 passes in like fashion around the pulleys 38 and 34 and then upwardly to the drum 63 to which itis likewise secured as ,61. In Fig. 5 I have shown a'diagram of the electrical connections with the generator' 69 and pole-changing switch 70 by which the motor 64 may be'rotated in either direction as required. l

' Referring to Fig. '3, I have shown a preferred means of loading the pile,46 on the table 45 on the carrier bars 29' and 30: The

table 45 is supported by the angle irons 43' and 44 on the vertically movable platform 71 of the truck 72- mounted on wheels 73 and moved by the handle7 4. .As shown the plat form 71 is raised and lowered by the screw shafts 75ithreaded in brackets 76 secured in the floor 77 of thetruc-k, suchshafts 75 having the worm gears 78 operated by worms 79 on the operating shaft 80'which is rotated by the crank 81. By thesedevices the table 45 on the platform 71 may be raised and lowered as required, Fig. 3 showing same raised with the depending flanges 41 and 42 above and fibOllt to belowered the slots 39 and 40 therein; Y

Pivoted on the two swlng fi supports; 82 (onlyonebein n from the shafts of the pu leys 37 an 38.'

ends of theshafts 25 are These four supports act to rigidly support the carrier bars 29 and 30 when the heavy" pile 46 is resting. thereon and to prevent the V contacting with the floor 84 from the elas- Lab 'ticity of the carrier cables 57 and 58 or for any other cause. Such supports 82 and 83 also serve as guides to keep the cables 57 and 58 on the pulleys during the raising and lowering movements of the-table-board 22- and table 45.

.The operation of my paper-lift is shown in Figs. 1, 2 and 3 and is substantially as follows: The truck 72 with the table 45 resting on the raised platform 71 is pushed in between the two carrier bars 29 and 30 into the position shown in Fig. 3. The crank 8 1'is then turned to lower the platform 71 which allows the depending flanges 41 and 42 of the table 45 to be lowered to, and rest on, the

carrier bar slots 39 and as shown in Fig.

1 whereby .the pile 46 is supported on the bars 29 and 30. The truck 72 is then withdrawn and the motor 64 is actuated to cause the winding drums 62 and 63 simultaneously to shorten the carrier cables 57 and 58. The initial shortening of these cables will cause the table and table-board to be swung to the right on the shaft 16 as a pivot and away from the floor 84:, the general direction bein indicated by the dotted arrow shown in ig. 1,. When the table-board 22 and table 45 are raised to their expanded obtuseangled position shown in dottedlines in Fig. 1, the pile 46 will have tilted forwardly so that such pile will have the outline substantially as indicated by the dotted line 85, the individual sheets being feathered "or fanned out in a bank as shown in Fig. 2, whereby the combing rolls 10 may separate and advance the individual sheets as in continuous feeders. When the pile 46 is depleted from the table 45 and table-board 22, the motor .64 is reversed to unwind the carrier cables 57 vention as herein disclosed. Therefore I do not restrict myself to the specific structural features or arran ements which I have herein illustrated an described.

I claim as my invention:

1. In a paper-lift, a frame, a table-board pivoted thereto, pile-supporting means pivoted to the table-board, and means to raise and lower said table-board andsupp'orting means on said pivots,

2. In a paper-lift, a frame, a table-board pivoted thereto, pile-supporting means pivoted to the lower edge of the table-board,

and means to raise and lower said tableboard and supporting means on said pivots.

3. In a paper-lift, a frame, a table-board pivoted thereto, pile-supporting means pivoted to the table-board, and means to-raise and lower said table-board and supporting means jointly and simultaneously on said p'ivots- 4;. In a paper-lift, a frame, a table-board pivoted thereto, pile-supporting means pivoted to the lower edge of the table-board,

and means to raise and lower said ta.ble-

board and supporting means jointly and simultaneously on said pivots.

5. In a paper-lift, a feed-board, a depending table-board" pivoted to said feed:board, separable pile-supporting means pivoted to thelower edge of the table-board, and means to raise said table-board and pile-supporting means on said pivots to form a rear extension of said feed-board.

6. In a paper-lift, a feed-board, a. depending table-board ivoted to the rear transverse edge of sai feed-board, separable pilesupportin means pivoted to the lower edge of the tab e-board, and means to raise said table-board and pile-supporting means on said ivots to form a rear extension of said feedoard.

7. In a paper-lift, afeed-board, a depending table-board pivoted to said feed-board,

separable pile-supporting means pivoted to the lower edge of the table-board, and means to raise said table-board andpile-supporting means jointly and simultaneously on sai pivots to form a rear extension of said feedboard.

8. In a aper-lift, a feed-board, a depending table-board pivoted to the rear transverse edge of said feed-board, separable pilesupporting means pivoted to the lower edge of the table-board, and means to raise said table-board and pile-supporting means jointly and simultaneously on said pivots to form .a rear extension of said feed-board.

'9. In combination with automatic sheetfeeding devices, a feed-board, a table-board pivoted thereto, sheet ile-supporting means pivoted to the table-b Jointly raise both table-board and pile-supporting means to fan out the pile over said feed-board beneath said sheet-feeding devices.

oard, and means to I 10. In combination with automatic sheeta feeding devices, a feed-board, a table board pivoted thereto, sheet pile supporting means pivoted to the table-board, and means to 11. In combination with automatic sheet-v feeding devices, a feed-board, a table-board pivoted thereto, sheet pile-supporting means pivoted to the table-board, and means to jointly raise both table-board and pile-supporting means on their pile forwardly over sai feed-board beneath said sheet-feeding devices. i

l2. vIn combination with automatic sheetfeeding devices, a feed-board, a table-board pivoted thereto, sheet pile-supporting means transversely pivoted to the lower edge of said table-board, and means to jointly raise both table-board and pile-supporting means on their pivots to fan out the pile forwardly over said feed-board beneath said sheet-feeding devices.

13. In a paper-lift, a swinging tableboard, pile-supporting means pivoted thereto, means to raise and lower jointly said table-board and supporting means, and independent means to hold said pile support. when said actuating means are lowered.

14. In a paper-lift, a swinging tableboard, pile-supporting means pivoted thereto, means to raise and lower jointly said table-board and supporting-means, and separate members loose y journalled on said supporting means to hold said pile support when said actuating means are lowered.

15. In a paper-lift, a feed-board, a deending table-board pivoted "to said feedoard, table-supporting means pivoted to the lower edge of the table-board, a pile table detachably mounted on said supporting means, and means to raise both table-board and supporting means on the pivots to fan ivots to fan out the out the pile over said feed-board, table-board and table. V

16. In a paper-lift, a feed-board-, a depending table-board pivoted to said feedboard, table-supporting means pivoted to the :supporting means pivoted to the lower edge of the table-board, a pile table detachably mounted on said supporting means, and means to raise both table-board and supporting means on the pivots to fan out the pile over said feed-board, table-board and table and beneath said sheet-feeding devices.

18. In combination with. automatic sheetfeeding devices, table-board pivoted to said feed-board, tablesupporting means pivoted to the lower edge of the table-board, a pile table detachably mounted on said supporting means, and means to jointly and simultaneously raise a feed-board, a dependingboth table-board and supporting means on I the pivots to fan out the pile over said feedboard, table-board and table and beneath said sheet-feeding devices.

ARNO w. ROBERTSON. 

